fix: handle 'prompt' key for UserPromptSubmit and deduplicate rule loading

[kmmwren]

Problem

Two bugs causing prompt-event hookify rules to silently never fire:

1. Wrong key for UserPromptSubmit input

rule_engine.py reads input_data.get('user_prompt', '') but Claude Code's UserPromptSubmit hook sends the user's message under the key prompt, not user_prompt. The result: any rule with field: user_prompt always receives an empty string and never matches.

Affected rules: all prompt-event rules (use-superpowers, decision-capture, meetsync-reminder, etc.).

2. Duplicate rule loading when cwd is home

config_loader.py searches two glob patterns:

• .claude/hookify.*.local.md (project-level, relative to cwd)
• ~/.claude/hookify.*.local.md (global)

When the hook runs with cwd=$HOME (which Claude Code does), both patterns resolve to the same files. Every rule is loaded twice, causing duplicate systemMessage output.

Fix

rule_engine.py: fall back to prompt when user_prompt is absent:

return input_data.get('user_prompt') or input_data.get('prompt', '')

config_loader.py: deduplicate by resolved absolute path before loading:

seen = set()
for f in glob.glob(pattern):
    resolved = os.path.realpath(f)
    if resolved not in seen:
        seen.add(resolved)
        files.append(f)

Test

echo '{"session_id":"test","transcript_path":"/tmp/test","prompt":"can you implement a new feature"}' \
  | CLAUDE_PLUGIN_ROOT=/path/to/hookify-plus python3 hooks/userpromptsubmit.py

Should now return a non-empty systemMessage for any matching prompt-event rule.

🤖 Generated with Claude Code